If you recently switched to a new iPhone and transferred your apps using iCloud, M1 might not work as expected right away. Here's what to check to make sure everything runs smoothly.
1. Common symptoms
After transferring to a new iPhone, you might notice:
The app looks logged in, but you're not receiving calls or messages
Your call forwarding settings aren't working anymore
The app feels unresponsive or silent
These issues are usually caused by the way Apple transfers apps to new devices.
2. Why this happens
When you use iCloud to set up your new iPhone, Apple transfers most app data, but not your login credentials.
That means M1 might look like you're logged in, but behind the scenes, you're not. This can prevent calls and notifications from coming through.
3. What to do
To fix this, you just need to refresh your session:
Open the M1 app
Go to Settings
Tap Log out
Log back in ⚠️ just make sure to use the same phone number or Apple ID you used when first creating your account. Using different credentials could create a duplicate account.
That's it! This will re-authenticate your device and restore full functionality.
➡️ If logging out doesn't work, you can also try deleting and reinstalling the app.
4. Additional step: Re-enable call forwarding
If you had call forwarding set up on your old device, double-check it's still active:
Open the M1 app
Go to Settings > M1 Number > Call Forwarding
Disable and re-enable forwarding if needed. 📖 See full instructions here.
ℹ️ Some carriers may automatically disable forwarding when you switch phones.
5. Shared Line members
If you're part of a Shared Line inbox and recently switched to a new device, you may lose access to the shared inbox.
⚠️ Due to a current limitation, team members who change devices will need to be reinvited by the inbox owner to reconnect.